Finely-divided-fuel-burning locomotive



N N, 1930; G1 w. CLENDON 1w78l,3l9

FINELY DIVIDED FUEL BURNING LOCOMOTIVE Filed Aug. 15, 1925 3 Sheets-Sheet l anvemtoz Nov 11, 1930. e. w. CLENDON 1,731,319

7 FINELY DIVIDED FUEL BURNING LOGOMOTIVE Filed Aug. 15, 1925 3 Sheets-Sheet 2 Nov. H, 1930. G. w. CLENDON 3 ,319

FINELY DIYIDED FUEL BURNING LOGOMOTIVE Filed Aug. 15, 1925 3 Sheets-Sheet 5 Patented Nov. fl}. 1232 GEGBGE GLENDOH, F JE'IEBMUNT, NEW "2612K, ASSIGNOF. .20 IN rnnwarronnn cour- EBUSIION WIGINEERING CORPORATIUM, A. GOFIPOFIATIUN till? DELAWARE Application filed August 15, 1925. tlerlal Etc. 52,352.

This invention relates to improvements in locomotives and is especially useful in connection with locomotives intended for the burning of finely divided fuel such as pulverized coal and fuel oil.

One of the primary objects of my inventron is to provide a new form of locomotive fire box boiler well adapted to carry higher pressures than ordinarily carried on locomotives.

Another object of the invention is to greatly increase the amount of heating or evaporating surface of a locomotive fire box; and as subsidiary thereto, to prevent dificulties in connection with the closing over of the fines by the coalescing of refuse particles on the flue sheet.

Still another object of the invention is to provide requisite flame travel for the burning of fuel in suspension in a locomotive fire box; and al 0 the maintenance of proper combustion, no withstanding the large amount of evaporating surface.

My invention also contemplates the in creasing of the steaming capacity of a locomotive boiler. I

How the foregoing, together with such other objects as may hereinafter appear, or are incident to my invention are realized, is illustrated in preferred form in the accompanying drawings, in which Fig. 1 is a longitudinal section thru a fire box embodying my improvements, with cer+ tain tubes omitted in order to avoid confuslon;

Fig. 2 is a horizontal section thru the fire box shown in Fig.1;

Fig. 3 is a section, half of which is taken on the line 33 of Fig. land half taken on the line 3 -3 of Fig. 1;

Fig. 4 is a fragmentary sectional view illustrating a modification of the invention;

Fig. 5 is a sectional view illustrating still another modification; and

Fig. 6 is a half vertical cross sectionthru a fire box embodying still other modifications of my invention.

Referring now to Figs' 1 to .3 inclusive, the fire box boiler comprises a front water leg 7; the rear water leg 8; two horizontally spaced lower drums 9 connecting the bottom portions of the two water legs; the two upper drums 10 connecting the upper portions of such water legs; the barrel portion 11 extending forwardly of the front water leg 7 and communicating therewith; and certain other parts now to be more particularly set forth. The respective upper and lower drums are connected by banks of verticall extending tubes 12, there being two rows 0 such tubes. Spaced away from such tubes 12 are still other tubes 13 connecting the respective upper and lower drums, whereby a channel 1% is provided between the tubes 12 and 13. The rows of tubes 12 and 13 terminate short of the front and rearjwater legs providing a channel 15 at the rear at each side of the 're box and a channel 16 at the front at each side of the fire box.

Extending rearwardly and upwardly from the front water leg to the rear water leg is a row of spaced circulating tubes 1'? carrying a refractory arch 18.

The bottom portions 19 carrying the lower drums are. bricked over as indicated at 20 and a wall 21 of bricks extends upwardly therefrom on the outside of the drums 9 and on the outside of the tubes 13 up around the drums 10, to form a closing shell which in turn has a metallic shell 22. The inside portions of the drums 9 are covered over with refractory material 23 and there is a wall 24 on each side of the fire box composed of bricks carried by the tubes 12 in the manner indicated in the drawing. These walls extend from the lower drums up to the level of the arch as best seen in Fig. 1.

(ilosing the open bottom of the fire box proper is a refractory lined fire pan .t. havin an arch 25 at the rear thereof bein provide with a plurality of air inlets 26 or theadmission of combustion air.

Pulverized coal is admitted thru one or more burners 27 at the rear of the fire pan, the fuel and flame stream first travelingforwardly and then upwardly and rearwardly beneath the arch in the space defined by the arch, the walls 24 and tubes 12, the refractory portions 23 and the fire pan. The fuel and fiance leaving the rear portion of the space thus defined divides, part passing upwardly around the rear end of the arch 18 and part passing laterally outward thru the" channels 15 to enter into the channels 14. The part that rises over the rear end of the arch 18 moves forwardly toward the flue sheet 28, and the portions passing laterally out thru the channels 15, travel forwardly thru the channels 14 and thence inwardly thru the channels 16 to the space above the arch immediately adjacent the flue sheet.

It will be seen from the foregoin that a long flame travel is provided for the burning fuel and that the entering fuel is subjected to radiant heat and burns withii a space largely defined by refractories, the radiant heat from which serves to progress the combustion so rapidly that combustion is not only Well established but almost completed within a region defined by such refractories: The fuel and flame stream and the products of combustion leaving the zone of intense tem erature defined by the refractories, is Sub ected to the cooling action of the tubes 12 and 13 constituting the passages 14 and to the cooling action of the lower and exposed portions of the upper drums 10, all of which absorb a Very large amount of heat with the eflect of lowering the temperature to the point Where the refuse particles carried in suspension will not lodge and coalesce upon the flue sheet 28, such refuse particles, on the contrary, dropping down on to the arch 18 from which they may be readily removed thru appropriate openings provided for the purpose.

As a further means for absorbing heat li may provide a plurality of inclined tubes 29 connecting the upper portions of the rear and front water legs, such tubes being, located above the arch 18 in such manner that the flame and products passing upwardly over the rear end ofthe arch pass along and thru the spaces between such tubes. It will be apparent that the circulation thru .the fire box boiler will be very rapid and that the boiler will have a very high steaming capacity, while at the same time combustion is not interfered with. The apparatus is also well adapted to carry higher pressures.

If'desired the tubes 13 may have longitudinally extending fins 30 welded or otherwise secured'to opposite sides thereof to constitute a wall portion protecting the refractory shell 21. It will be apparent that the arch and. also the walls 24 are protected by the cooling actionof the. tubes.

In the modification shown in Fig. 4 the tubes 17 and the tubes'12 are also equipped with fins 31 whereby to further protect the arch 18 and the wall portions 24.

In the arrangement of Fig. 5 the arch .18 is carried to the rear water leg, openings being provided at the sides for upward passage of the flames and products of combustion.

In the arrangement shownin Fig. 6 substantially the same general arrangement is followed with the exception that the fire box has stationary water legs 32 formed by inside and outside side sheets 33 and 34, and with a further exception that the channels 14 are formed by such water-legs: and by tubes 35 extending inwardly from a lower portion of the water legs upwardly to an upper portion thereof. Such tubes 35 pass thru an upright refractory wall 36 correspondingto the walls 24.

l/Vhat I claim is:

1. In a locomotive boiler, a fire box comprising front and rear waterv legs, upper and lower drums connecting the legs at opposite sides, sets of tubes spaced inwardly from the sides of the box connecting the respective upper and lower drums on each side, a water tube supported arch between said sets of tubes and extending substantially from the lower forward corner of the fire box diagonally toward the upper rear corner but terminating short thereof together with a baflle supported by each of said sets of tubes and extending downwardly from the side edges of said arch.

2. In a locomotive boiler the combination of a shell, front and rear water legs, upper together with a bafile supported'by each of said sets of tubes, said bafiies extending downwardlv from the side edges of said arch to the respective lower drums therebeneath.

. 3; In a locomotive boiler the combination of a shell, front and rear water legs, upper and lower drums in said shell connecting the legs at opposite sides, sets of tubes spaced inwardly from the sides of said shell connecting the respective upper and lower drums on each side, an arch between said sets of tubes extend ng from the lower edge of said front water leg toward the upper edge of said rear water leg but terminating short thereof, other sets of tubes adjacent the sides ofsaid shell connecting the respective upper and lower drums on each side together with a bame supported by each of said first mentioned sets of tubes, said bafiles extending downwardly from the side edges of said arch to the respective lower drums therebeneath.

4. In a locomotive boiler the'combination of a shell, front and rear water legs, upper and lower drums in said shell connecting the legs at opposite'sides, sets of tubes spaced inwardly from the sides of said shell connecting the respective upper and lower drums on each side, an arch between said sets of tubes extending from the lower edge of said front water leg toward the upper edge of said rear water leg but terminating short thereof, other sets of tubes adjacent the sides of said shell connecting the respective upper and lower 5 drums on each side to ether with a bafiie supported by each of Sci first mentioned sets of tubes, said baiiies extending downwardly from the side edgesof said arch to the respective lower drums therebeneath and terminat- 10 ing at each end short of the water .legs.. v y

5. In a locomotive boiler, a fire box comrising front and rear water legs, upper and ower drums connecting the legs at opposite sides, and two spaced rows of tubes ateach 15 side connecting the respective upper and low-' er drums, the said spaces roviding flame channels at each side of the ox, and refractories supported by the inner row of said 1 tubes.

20 6. In a locomotive boiler, a fire box comprising front and rear water legs, upper and lower drums connecting the legs at opposite sides, and two spaced rows of tubes at each side connecting the respective upper and lowg5 er drums, the said spaces providing ame channels at each side of. the box, and a refrac tory wall carried by the inner row of said tubes at each side of the firebox, said'wall terminating short of the front and therear so of the box. 7 In testimony' whereof, -I have hereunto signed my name. I

. GEORGE W. GLENDON. 

